public String getDefaultPrefix( final String uri ) { if ( uri == null ) { throw new NullPointerException(); } if ( namespaceCollection == null ) { namespaceCollection = new NamespaceCollection(); namespaceCollection.configure( LibDocBundleBoot.getInstance().getGlobalConfig(), "org.pentaho.reporting.libraries.docbundle.namespaces." ); } return namespaceCollection.getPrefix( uri ); }